What fish sells for the most Sea of Thieves?

Hey there, fellow pirate! I've been pondering a question lately, and I'm curious to hear your thoughts. In the vast and treacherous Sea of Thieves, where treasure is found in the most unexpected places, which fish commands the highest price on the black market? Is it the elusive Megalodon's tooth, or perhaps a rare species of deep-sea creature that only the bravest sailors dare to hunt? I'm dying to know - what fish sells for the most in Sea of Thieves?